LD39100

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1 A low quiescent current low noise voltage regulator

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  • The LD39100 provides 1 A maximum current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. The device is stable with ceramic capacitors on the input and output.

    The ultra-low dropout voltage, low quiescent current and low-noise features make it suitable for low power battery-powered applications. Power supply rejection is 70 dB at low frequency and starts to roll off at 10 kHz.
    Enable logic control function puts the LD39100 in shutdown mode, allowing a total current consumption lower than 1 µA. The device also includes short-circuit constant current limiting and thermal protection.
    LD39100 is available also in AEC-Q100 qualified version, in the DFN6 (3x3 mm) with wettable flank package.

    Key Features

    • AEC-Q100 qualified
    • Input voltage from 1.5 to 5.5 V
    • Ultra-low dropout voltage (200 mV typ. at 1 A load)
    • Very low quiescent current (20 µA typ. at no load, 200 µA typ. at 1 A load, 1 µA max. in off mode)
    • Very low-noise with no bypass capacitor (30 µ VRMS at VOUT = 0.8 V)
    • Output voltage tolerance: ±2.0% at 25 °C
    • 1 A guaranteed output current
    • Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 
    • Logic-controlled electronic shutdown
    • Stable with ceramic capacitors COUT = 1 µF
    • Internal current and thermal limit
    • DFN6 (3x3 mm) package
    • Temperature range: -40 °C to 125 °C

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD39100PU12R
Active
DFN6 3x3 Industrial Ecopack2
LD39100PU12RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PU18R
Preview
DFN6 3x3 Industrial Ecopack2
LD39100PU18RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PU25R
Preview
DFN6 3x3 Industrial Ecopack2
LD39100PU25RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PU30R
Preview
DFN6 3x3 Industrial Ecopack2
LD39100PU33R
Active
DFN6 3x3 Industrial Ecopack2
LD39100PU33RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PUR
Active
DFN6 3x3 Industrial Ecopack2
LD39100PURY
Active
DFN6 3x3 Automotive Ecopack2

LD39100PU12R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU12RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PU18R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Preview

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU18RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PU25R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Preview

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU25RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PU30R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Preview

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU33R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU33RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PUR

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PURY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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LD39100PU12R Available at 5 distributors

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.2 0.6 / 1k
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Output Tolerance (typ):

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LD39100PURY Available at 3 distributors

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 - 0.8 / 1k
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2

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1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU30R No availability of distributors reported, please contact our sales office
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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 3 0.6 / 1k
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Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU33RY Available at 3 distributors

Distributor availability ofLD39100PU33RY

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DIGIKEY WORLDWIDE 4422 1 Order Now
MOUSER WORLDWIDE 7577 1 Order Now
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7577

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 3.3 0.8 / 1k
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Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU25RY Available at 5 distributors

Distributor availability ofLD39100PU25RY

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DIGIKEY WORLDWIDE 1591 1 Order Now
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Farnell Element14 EUROPE 88 1 Order Now

Distributor reported inventory date: 2021-01-24

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1591

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1

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1000

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0

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AMERICA Order Now

FUTURE

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1000

Min.Order

1

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3720

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1

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WORLDWIDE Order Now

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88

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1

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EUROPE Order Now

Distributor reported inventory date: 2021-01-24

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 2.5 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU25R No availability of distributors reported, please contact our sales office
Preview
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 2.5 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU18RY Available at 4 distributors

Distributor availability ofLD39100PU18RY

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DIGIKEY WORLDWIDE 2800 1 Order Now
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2800

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20

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240

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5199

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WORLDWIDE Order Now

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.8 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU18R No availability of distributors reported, please contact our sales office
Preview
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.8 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU12RY Available at 2 distributors

Distributor availability ofLD39100PU12RY

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DIGIKEY WORLDWIDE 6054 1 Order Now
MOUSER WORLDWIDE 3069 1 Order Now

Distributor reported inventory date: 2021-01-24

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DIGIKEY

Stock

6054

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1

Region

WORLDWIDE Order Now

MOUSER

Stock

3069

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-01-24

Free Sample Buy Direct
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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.2 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PUR Available at 9 distributors

Distributor availability ofLD39100PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 74178 1 Order Now
COMPEL EUROPE 2749 1 Order Now
AVNET AMERICA 15000 0 Order Now
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MOUSER WORLDWIDE 12081 1 Order Now
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Distributor reported inventory date: 2021-01-24

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74178

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1

Region

WORLDWIDE Order Now

COMPEL

Stock

2749

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

15000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2987

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

74

Min.Order

0

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ARROW

Stock

3000

Min.Order

3000

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AMERICA Order Now

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Stock

12081

Min.Order

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Farnell Element14

Stock

369

Min.Order

1

Region

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Distributor reported inventory date: 2021-01-24

Free Sample Buy Direct
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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 - 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU33R Available at 5 distributors

Distributor availability ofLD39100PU33R

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4402 1 Order Now
AVNET AMERICA 244 0 Order Now
Newark Element14 AMERICA 207 0 Order Now
MOUSER WORLDWIDE 2757 1 Order Now
Farnell Element14 EUROPE 3429 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

4402

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

244

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

207

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2757

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3429

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-01-24

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 3.3 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU12R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofLD39100PU12R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2944 1 Order Now
AVNET AMERICA 250 0 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 2903 1 Order Now
Farnell Element14 EUROPE 2103 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

2944

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

250

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2903

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2103

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PURY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PURY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6601 1 Order Now
AVNET AMERICA 3000 0 Order Now
MOUSER WORLDWIDE 1693 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

6601

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1693

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

-

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU30R

Marketing Status

Preview

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PU33RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU33RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4422 1 Order Now
MOUSER WORLDWIDE 7577 1 Order Now
Farnell Element14 EUROPE 1640 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

4422

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

7577

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1640

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU25RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU25RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1591 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 1000 1 Order Now
MOUSER WORLDWIDE 3720 1 Order Now
Farnell Element14 EUROPE 88 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

1591

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3720

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

88

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU25R

Marketing Status

Preview

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PU18RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU18RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2800 1 Order Now
RS COMPONENTS EUROPE 20 1 Order Now
AVNET AMERICA 240 0 Order Now
MOUSER WORLDWIDE 5199 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

2800

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

20

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

240

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5199

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU18R

Marketing Status

Preview

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PU12RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU12RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6054 1 Order Now
MOUSER WORLDWIDE 3069 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

6054

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3069

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PUR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofLD39100PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 74178 1 Order Now
COMPEL EUROPE 2749 1 Order Now
AVNET AMERICA 15000 0 Order Now
FUTURE WORLDWIDE 2987 1 Order Now
ARROW EUROPE 9000 0 Order Now
Newark Element14 AMERICA 74 0 Order Now
ARROW AMERICA 3000 3000 Order Now
MOUSER WORLDWIDE 12081 1 Order Now
Farnell Element14 EUROPE 369 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

74178

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2749

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

15000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2987

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

9000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

74

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

12081

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

369

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

-

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PU33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofLD39100PU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4402 1 Order Now
AVNET AMERICA 244 0 Order Now
Newark Element14 AMERICA 207 0 Order Now
MOUSER WORLDWIDE 2757 1 Order Now
Farnell Element14 EUROPE 3429 1 Order Now

Distributor reported inventory date: 2021-01-24

Distributor Name

DIGIKEY

Stock

4402

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

244

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

207

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2757

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3429

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-01-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors